Lexmark C935 - Printhead Control Error

2-98 Printer Service Manual
5057-XXX
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907.05 Printhead control error
908.00 Waste toner full error
Step Check Yes No
1 Perform a POR.
Does the error occur when the power is turned off/on?
Go to step 2. Perform several
print tests.
If the problem
remains, go to
step 2.
2
Turn the printer off for 60 seconds.
Does the error occur when the power is turned off/on again?
Go to step 3. Problem solved.
3
Perform a POR.
Does the error occur when the power is turned off/on?
Replace the
printhead
assembly.
Go to “Printhead
assembly
removal” on
page 4-104.
Problem solved.
Step Check Yes No
1 Reinstall the waste toner cartridge.
Does the error remain?
Replace the waste
toner cartridge.
Go to step 2.
Problem solved.
2
Check the sensor (waste toner full) for proper operation.
1. Enter the Diagnostics Menu.
2. Select BASE SENSOR TEST.
3. Select Devices.
4. Select Waste toner cartridge full.
Does the display on the operator panel, change every time
the sensing area of the above sensor is interrupted or
blocked?
Go to step 4.
Go to step 3.
3
Check the sensor (waste toner full) for proper connection.
Is the above component properly connected?
Replace the
sensor (waste
toner full)
.
Replace the
connection.
4
Perform a POR.
Does the error occur when the power is turned off/on?
Replace the lower
printer engine card
assembly.
Go to “Lower
printer engine
card assembly
removal” on
page 4-93.
Problem solved.